rarefy vs chemical science

rarefy is not a noun while chemical science is a noun.

Word	Noun	Adjective	Verb	Adverb
rarefy	No	No	Yes	No
chemical science	Yes	No	No	No

rarefy (noun)	chemical science (noun)
	the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions

rarefy (verb)	chemical science (verb)
weaken the consistency of (a chemical substance)
make more subtle or refined
lessen the density or solidity of